1 /* $OpenBSD: adw.h,v 1.9 2002/03/14 01:26:53 millert Exp $ */
2 /* $NetBSD: adw.h,v 1.9 2000/05/26 15:13:43 dante Exp $ */
3
4 /*
5 * Generic driver definitions and exported functions for the Advanced
6 * Systems Inc. SCSI controllers
7 *
8 * Copyright (c) 1998, 1999, 2000 The NetBSD Foundation, Inc.
9 * All rights reserved.
10 *
11 * Author: Baldassare Dante Profeta <dante@mclink.it>
12 *
13 * Redistribution and use in source and binary forms, with or without
14 * modification, are permitted provided that the following conditions
15 * are met:
16 * 1. Redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer.
18 * 2. Redistributions in binary form must reproduce the above copyright
19 * notice, this list of conditions and the following disclaimer in the
20 * documentation and/or other materials provided with the distribution.
21 * 3. All advertising materials mentioning features or use of this software
22 * must display the following acknowledgement:
23 * This product includes software developed by the NetBSD
24 * Foundation, Inc. and its contributors.
25 * 4. Neither the name of The NetBSD Foundation nor the names of its
26 * contributors may be used to endorse or promote products derived
27 * from this software without specific prior written permission.
28 *
29 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
30 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
31 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
32 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
33 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
34 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
35 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
36 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
37 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
38 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
39 * POSSIBILITY OF SUCH DAMAGE.
40 */
41
42 #ifndef _ADVANSYS_WIDE_H_
43 #define _ADVANSYS_WIDE_H_
44
45 /******************************************************************************/
46
47 typedef int (* ADW_ISR_CALLBACK) (ADW_SOFTC *, ADW_SCSI_REQ_Q *);
48 typedef void (* ADW_ASYNC_CALLBACK) (ADW_SOFTC *, u_int8_t);
49
50
51 /*
52 * per request scatter-gather element limit
53 * We could have up to 256 SG lists.
54 */
55 #define ADW_MAX_SG_LIST 255
56
57 /*
58 * Scatter-Gather Definitions per request.
59 */
60
61 #define NO_OF_SG_PER_BLOCK 15
62
63 /* Number of SG blocks needed. */
64 #define ADW_NUM_SG_BLOCK \
65 ((ADW_MAX_SG_LIST + (NO_OF_SG_PER_BLOCK - 1))/NO_OF_SG_PER_BLOCK)
66
67
68 struct adw_ccb {
69 ADW_SCSI_REQ_Q scsiq;
70 ADW_SG_BLOCK sg_block[ADW_NUM_SG_BLOCK];
71
72 struct scsi_sense_data scsi_sense;
73
74 TAILQ_ENTRY(adw_ccb) chain;
75 struct adw_ccb *nexthash;
76 u_int32_t hashkey;
77
78 struct scsi_xfer *xs; /* the scsi_xfer for this cmd */
79 int flags; /* see below */
80
81 int timeout;
82
83 /*
84 * This DMA map maps the buffer involved in the transfer.
85 */
86 bus_dmamap_t dmamap_xfer;
87 };
88
89 typedef struct adw_ccb ADW_CCB;
90
91 /* flags for ADW_CCB */
92 #define CCB_ALLOC 0x01
93 #define CCB_ABORTING 0x02
94 #define CCB_ABORTED 0x04
95
96
97 #define ADW_MAX_CCB 63 /* Max. number commands per device (63) */
98
99 struct adw_control {
100 ADW_CCB ccbs[ADW_MAX_CCB]; /* all our control blocks */
101 ADW_CARRIER *carriers; /* all our carriers */
102 };
103
104 /*
105 * Offset of a CCB from the beginning of the control DMA mapping.
106 */
107 #define ADW_CCB_OFF(c) (offsetof(struct adw_control, ccbs[0]) + \
108 (((u_long)(c)) - ((u_long)&sc->sc_control->ccbs[0])))
109
110 /******************************************************************************/
111
112 int adw_init(ADW_SOFTC *sc);
113 void adw_attach(ADW_SOFTC *sc);
114 int adw_intr(void *arg);
115 ADW_CCB *adw_ccb_phys_kv(ADW_SOFTC *, u_int32_t);
116
117 /******************************************************************************/
118
119 #endif /* _ADVANSYS_ADW_H_ */